Angle Estimates

A Maths Starter of The Day

Each of the angles represented here is either acute or obtuse. Estimate the sizes of each of the angles then add your estimates together.

If you can't see the images above it may be because you do not have a recent version of the Flash Player installed. Please visit the Adobe web site to download the latest version of the free Flash Player.

Starter of The Day Menu | Transum Software | Privacy Policy


Keywords: Starter | Angles | Estimating

  • *L Smith, Colwyn Bay
  • Monday, May 22, 2006
  • "An absolutely brilliant resource. Only recently been discovered but is used daily with all my classes. It is particularly useful when things can be saved for further use. Thank you!"

How did you use this starter? Can you suggest how teachers could present or develop this resource? Do you have any comments? It is always useful to receive feedback and helps make this free resource even more useful for Maths teachers anywhere in the world.
Click here to enter your comments.

If you don't have the time to provide feedback we'd really appreciate it if you could give this page a score! We are constantly improving and adding to these starters so it would be really helpful to know which ones are most useful. Simply click on a button below:

Excellent, I would like to see more like this
Good, achieved the results I required
Satisfactory
Didn't really capture the interest of the students
Not for me! I wouldn't use this type of activity.

This starter has scored a mean of 2.6 out of 5 based on 37 votes.

 

Previous Day | This starter is for 28 May | Next Day


Visit the Transum Online Shop

Answers
24o   36o
  161o  
144o   24o

Adding the angles together gives 389o

 

Note to teacher: There are a number of factors which might make your projected image of the angles be slightly stretched. If this is the case the answers above will be unreliable. There is a protractor in the diagram which can be dragged over the angles. The green buttons will rotate the protractor. Right click over the diagram to zoom in in order to read the protractor accurately.

Note to teacher: Doing this activity once with a class helps students develop strategies. It is only when they do this activity a second time that they will have the opportunity to practise those strategies. That is when the learning is consolidated. Click the button above to regenerate another version of this starter from random numbers.